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The Discovery of Dark Energy

The Discovery of Dark Energy. Gerson Goldhaber Physics Department University of California at Berkeley and LBNL. Standard Candles after Calibration. Calibrated Standard Candles. Why are all the Type Ia SNe of nearly the same brightness?.

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The Discovery of Dark Energy

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  1. The Discovery of Dark Energy Gerson Goldhaber Physics Department University of California at Berkeley and LBNL

  2. Standard Candles after Calibration Calibrated Standard Candles Gerson Goldhaber, SFSU Colloquium

  3. Why are all the Type Ia SNe of nearly the same brightness? • When a star of near Solar Mass uses up all of its Hydrogen and Helium it collapses to a White Dwarf. (W.D.) • If the White Dwarf has a companion star then, for the right conditions, Mass can be Transferred to the W.D. • Type Ia SNe are due to the explosion of a W.D. This occurs when it reaches a mass of 1.4 M0(the Chandrasekhar limit) from Mass Transfer Gerson Goldhaber, SFSU Colloquium

  4. Positive Image Dec 28, 1989 Gerson Goldhaber, SFSU Colloquium

  5. Negative Image Jan 23 1990 Gerson Goldhaber, SFSU Colloquium

  6. Superimposed images Gerson Goldhaber, SFSU Colloquium

  7. Supernova Discovery and Measurement Sequence. Gerson Goldhaber, SFSU Colloquium

  8. Gerson Goldhaber, SFSU Colloquium

  9. The Sky in Chile By Chris Smith at Cerro Tololo Gerson Goldhaber, SFSU Colloquium

  10. The Hubble SpaceTelescope \ Gerson Goldhaber, SFSU Colloquium

  11. Expansion History of the Universe Gerson Goldhaber, SFSU Colloquium

  12. Discovery of Dark Energy A Supernova explodes and the light reaches us some 9 billion years later. The light started out about 4.5 billion years before our solar system was formed. Gerson Goldhaber, SFSU Colloquium

  13. Supernova Light Curve and Spectrum Gerson Goldhaber, SFSU Colloquium

  14. SNe Light Curves from the HST and Images Gerson Goldhaber, SFSU Colloquium

  15. Type Ia SNe and the Expansion of the Universe Observation of Time Dilation negates “Tired Light” 1/(1+z) 1/(1+z)s Gerson Goldhaber, SFSU Colloquium

  16. Adjusting for Stretch Gerson Goldhaber, SFSU Colloquium

  17. Series of Hubble Curves to allow the Measurement of M Gerson Goldhaber, SFSU Colloquium

  18. Gerson Goldhaber, SFSU Colloquium

  19. Hubble Curves Gerson Goldhaber, SFSU Colloquium

  20. Sullivan et al. 2003Elliptical Galaxies contain less Dust

  21. Concordance between SNe, CMB and Clusters M Gerson Goldhaber, SFSU Colloquium

  22. w vs. M (w =p/) Gerson Goldhaber, SFSU Colloquium

  23. Gerson Goldhaber, SFSU Colloquium

  24. Gerson Goldhaber, SFSU Colloquium

  25. Riess et al. 2004 SNe from the HST. Acceleration and earlier Deceleration

  26. Strong Gravitational Lensing Gerson Goldhaber, SFSU Colloquium

  27. Gerson Goldhaber, SFSU Colloquium

  28. First SN discovered in a cluster in this search preliminary Cluster RCS0221-03 at z = 1.02

  29. SNe discovered in ongoing search z=1.316 preliminary z=0.926 preliminary Gerson Goldhaber, SFSU Colloquium

  30. Gerson Goldhaber, SFSU Colloquium

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